Also, this component generates huges amount of data in DB so my server getting slower and slower (when i have uninstall this component my site was multiple time faster)
Its not good to advice me that i have use better server if the problem is in component.
Also, if you use this component and after month-two realize that is very poor your links will be invalid and google search would not bring visitors.
I would NOT recommend this componenet to anybody,
thanks for your feedback. Anyway, I disagree:
1. well, the backlink info in free version is generally known, so I believe that should not be a reason to complain
2. many links + speed - there really is no problem in the component, partly, this is because of the principle how the component works - it has to store the links to DB to be able to support "any" SEF URL links; sencondly, problems may be connected with improper configuration in relation to 3rd party components -- if the component is not supported, you may need to disable JoomSEF for it in order to prevent generating too many links
3. I do not see a smallest reason, why the generated links should be invalid to Google; we are ourselves using the same component at our website for about 7 years now and really have no problems