only source for syndicating feeds is feedwordpress
FeedWordpress doesn't "syndicate" feeds. It aggregates them. That is, it rips them off other sites and turns them into posts. That's fine if your site is an aggregation site, but for most people, that's not what they want to use WordPress for. I'd be hard pressed to think of a legitimate (i.e. non-spammy) reason to use FeedWordpress, myself.
That's not to say that there aren't any, but still, the whole point of FeedWordpress is to take posts from other sites and post them to your own database as if they were your own posts. Kinda weak, IMO. I can think of better ways to make aggregation sites. Heck, you could do a really nice aggregation site with with 30 lines of PHP and a Yahoo Pipe.
WordPress does syndication (as in making its posts available to others via feeds) without any plugins whatsoever. WordPress also has built-in functionality to read feeds from other sites and display parts of them, again without any plugins whatsoever.
how many of you tried or had to opportunity to test building WP on 3 different hosting companies?
I've installed WordPress on sites run by at least 10-15 different hosting companies. Never had a problem. Of course, I've never used FeedWordpress either.