ehmud

I want to include an external php file in wordpress single.php file; conditional to existance of certain custom taxonomies. That file should only include if post is linked to specified custom taxonomies. If custom taxonomy terms do not exist for that post, then file should not appear. Thanks in advance;

To me, you should never worry about page rank. Content is key to oline success. If you have distinguished content, your page rank will automatically increase.

I have experience of advertising on facebook but I noticed that you would get clicks for few days and then number of clicks will decrease each passing day. Secondly you asked about keywords or methodology which facebook use to show your ad; Facebook show ad as per user interests, likes, …