To expand on Manfred's comment on hosting services and contrary to what I said in another thread...I use
http://s329.photobucket.com/
I stated earlier that it was the conversion itself that boosted the saturation...I misspoke.
After running some tests where I grabbed a screenshot of one of my images published on the web and compared it to my original "save for web" images, I found that Photobucket was boosting my saturation about 15-20% when viewed in IE. As a result, my workflow is...
Convert profile from ProPhoto to sRGB and make adjustments if needed, including decreasing saturation by that 15%>resize to 150ppi and 6.666" on long side>Save for Web at maximum quality. Applying sharpening is generally something that slips my mind.
As I've said before that, IMHO, judging IQ based on a published web image, is an exercise in futility.