Content related links are far better than others.
Keep your site in the country on which you focused.
RSS is for content distributing. Especial for me, I always use full content output in feeds. Only when users want to leave a comment or trackback...
PHP is a language. SE has no prejudice on it. What the user get in the browser is alwasy HTML.
Try to leave your comments on the topic related blogs.
I also thing the link building is most important for stable ranking.
It can't do this kind of help
Click ratio on your page in the SERP, will affect the position in the next SERP.
1) Find the target reader/user, 2) Find the suitable keywords for them, 3) Do optimization with above information, like link building, content...
Put some image description around the image.
Kontera looks like being hacked by some hacker without name. The Account login page shows "It works!" only. via Digg Security...
Separate names with a comma.