Jfusion does very complex work and requires some basic functions (including cURL for some software integrations). Asking us to do very complex integrations without some basic software functions is like asking a brain surgeon to operate with only a fork.
If you need complex integrations for your website you better get dump our bad host. Really there is no valid excuse for a host not to support cURL.
At time when i write this review, sliComments is just starting so there are fiew options missing. (For example - it does not show Kunena avatars yet while it allready use Kunena profile names)
Because i see author is very active in updating this extension and it allready show great potential - I believe, soon it may be one of best comment extensions for joomla 1.7 and up.
Recommended and very promising extension.
(While this extension is really good, i not give 5 stars only because theres fiew options missing. Ill give 5 or even 10 stars if these options will be updated in future (Kunena avatars and notification for user that his comment needs to be approved to show in front page))