are external http requests detrimental?
===

I'm using a service to generate code and i get responses back from an external service. I'm often getting 30+ at a time.

I'm also using a favicon service to fetch favicons. The favicon service allows prefixing the domain with an arbitrary number to bypass the browser connection limit (eg. http://2245.website.com/?url=whatever.com)

In total my site can make upwards of 50-100 requests, but 15 of them are from my server
I used yslow and got a big fat F for this. Are these requests blocking? I could be generating 30 or more on a single page load, although it seems to load fine in testing... everything on my actual page loads immediately and I use css3 and jquery to fade in the animations nicely