Yes SEO is the first step for online marketing, so Polish your SEO Skills to get success online.

If you're performing well in google you may not worry abt Yahoo!

You can check Myiptest Firefox add-on (https://addons.mozilla.org/en-US/firefox/addon/11943) , it is an excellent tools which show your Browsing IP address, Proxy IP address and proxy IP location...

*When I was young, I found out that the big toe always ends up making a hole in a sock. So I stopped wearing socks"- Sir Albert Einstein

Commenting can help somewhat if it dofollow links but you should not depend only on this.

Check out this tools;
backlinkwatch.com
analyzebacklinks.com

You can use the Paypal IPN, which comes already in the osCMax package, check this thread, I hope it will help you more; http://www.oscommerce.com/community/contributions,3647

Feedburner has also very easy tools to setup rss for website.

You can create single site and give option to your visitors to translate the whole site in Hindi, it will save you in cost and efforts.

I you optimize your website well for google you need not worry about other SE as it more likely work for all search engine.

I agree, I think strategic alliance is much better.

SEO should be first approach, also combine social media in your marketing approach, once you doing considerably well you can test SEM method.

It is the people who make a forum like DP, I too like that forum where you can solve any problem just asking a question.

You can fetch your forum posts through rss however if you've a blog it would be much easier to promote your content.

Moneybookers and 2checkout seems one of the alternative.

Writing same information in same pattern could lead to duplicate content, go for unique content that add something new to every products you attempt to review.

Build links.

Yup, content is the key factor.

You can also check these two;

http://42mb.com
http://uploadchoice.com

You should promote it through adult forums & blog, also I assume there are few adult social networking site would be there that will meet your purpose.

Fastclick could be one of the better option.

Check few freelancer site or post your requirement in specific section in this forum.

You can create your local community at facebook by inviting people from your local network.

Well, here are the list of payment processor; http://www.electronic-payments.co.uk/product_data.jsp

That's some good info, thanks for posting.

I'll suggest to visit Java sun forum/codeguru forum there you can find some good info abt these languages.

I think you should use the relevant site link in your signature, however it is nothing bad if you use other site as atleast you can get some exposure.

Blog can work nice if you've good community.

I think you should narrow down your targeting to specific community, demography, culture and specific age to your niche area, it will help you to focus properly.

The moral and ethical responsibility of ecommerce site should be one of the major to protect their clients from fraud and let them have feeling that they are dealing in extermly safe and secured...

I think you should check with USA Customs Forms and FDA forms eligibility and their terms & conditions as applicable for this kind of business and hopefully you will need a liaison who will work for...

Best to use a professional company those who are already in market from years like paypal, 2checkout, authorize.net, ChronoPay, Worldpay, Moneybookers.

You can have a look on with few processors like charge.com, chronopay, instabill they seems more suitable to your business.

Yes Protx is good for Uk and ChronoPay the best for European countries.

Pretty nice article on this, you wish to check it out; http://salesstrategy.wordpress.com/2007/02/14/e-commerce-site-build-trusts-touch-the-feelings/

Do you have outstanding debit in your paypal account, if no follow these instruction to cancel your account; https://www.paypal.com/us/cgi-bin/webscr?cmd=_help&leafid=2381&answer_id=18037790

I...

I agree with stymiee you need to address your "security issues", however you can check different payment processors those who can meet your requirement, if you are looking alternate solution in UK, I...

For Indian merchant paypal is the best.

Well, for banner ad most important thing where you are going to place it and relevancy of particular site.

You could check with worldpay, moneybookers, ChronoPay, protx etc.