I would suggest following:

  1. Write great contents: The best way to boost your ecommerce is to write quality contents. Iteresting, iformative rich and problem solving contents turn your readers into your loyal customers . Inturn they share your contents to other social media platform. Increase the traffic, generate leads and hence boost your sales. Before you spend your alot of effort on adopting other things, first start working and focusing on your contents.
  2. Easy and simple check out process: Complex and log checkout process frustrate your potiential. Try to build a checkout process like amazon, One page check out process. It will facilitate your customers and result in reduction in abandoned check out process.
  3. Use rich snippets
  4. Unique title tags.
rproffitt commented: 8 years late. Watch those posting dates. +0

Use contents. Write and create great contents. If your readers get influenced by what you write, i mean if your content solve their ambiguities. It will automatically turn them to your loyal customers. Then they will share your content to the other social media platform also. It will boost your webiste leads in days.

I always say one thing, writing contents is an art, that can be learned. I would say there are techiques to be used while writing contents:

  1. Put yourself on a reader place, what if there is a complex content whoses understanding is diffcult, someone narrates you in a granny style. So use the same techique. Tell a story. People love to read stories and comprehend quickly.
  2. To keep the interest of your readers in your content, try to insert a joke.
  3. The best technique is to create a problem solving content, it just not provide your readers with the necessary information but also guide them to solve their issues.
rproffitt commented: While better that some above you did add to a long dead discussion. Tip: If it's 6 years old like this, really be sure you are adding value. -3

i hope this post helps you out.
Try using one of these platform:

  1. Wix Stores
  2. SiteBuilder
  3. BigCommerce
  4. Shopify
  5. Volusion
  6. Squarespace
    But i strongly recommed Volusion, as it is highly affordable with all bells and whistles that come along with it slow price.

A huge YES.
Backlinks bring you the link juice,attached with it is fame that helps you rank better on SERP.
Your increased connections on google improves the domain authority of your page and results in higher traffic to your website.
It's as simple as this :The more known you are in a market place, more cutomers are expected to visit your store, beacuse they know that you are one of the top solutions to their needs.
To be this top solution ,you need to be at one of the top google pages.And we all have experienced this, that no one clicks google's page no:2 or so on.
We type our query on google and select "mostly" one of the top results and trust the content and products on that page as if google is recommending us.There are few other things that are important for a good ranking andto be google's favorite but link building is top amongst them .It should not be ignored at any cost.
All you need to focus upon is how to do link building in the right way,in the right direction and then you are ready to fly

No,you cannot rank.Not at all, if you are not so popular.And if you are popular even then to maintain this position you need to continue this link building ,you can lower your speed in the latter case.Link building for google ranking cannot be ignored at all.Site optimization doesnot matters in this case beacause without inbound links it is never going to be found in the search engine results pages. Link building brings you massive link juice with massive fame.
I found a very interesting ,to the point quote today.It says:
Building Links is Like Shaving - If You Don't do it Every Day You Look Like a Bum

Seo link building when done in the right way, in the right direction then "languages doesnot matter at all".
By right way I mean ,following proper link building starategy and tactics.
By right direction I mean you should focus on your targetted location and select the language and build links accordingly.

If, your product is to be used in different localities, then try to select a general language like "english" that is used and understood by all,but always focus on the areas providing you with major amount of your customers and do plan your links in their respective language.You can seek help from a local person of the other language so that keywords of that language can be planned and link building can be executed more smoothly and successfully