Illustrator has really no pixel unit, what ot does is it equates pixels with points. Sine a point is 1/72 th of an inch you get one pixel is one pixel with  72 ppi export. Otherwise illustrator will just assume your image in inches and act accordingly.

Export Resolution in Adobe Illustrator
Can somebody explain how StackOverflow search works? I would like to add same features to a project I'm working on.

In SO, it's possible to filter the questions by multiple tags (e.g. c#, java) and get results sorted/paged by date or number of votes?

I realize that RDBMS with full-text engine can be used to filter and sort the questions but I'm not sure if that's the best solution? 

Is it possible to somehow get top N ordered results from a full-text index?

Maybe Lucene.NET or Redis or something similar is used?
