If I provide outbound link to a site whose theme is totally different from my site's theme.What would be the consequnces? or it will not affect anything?
If you are lucky nothing will happen to your site if you link to irrelevant sites, but if you use the same anchor text and get a 1000 in a week you WILL get penalised for spamming
Hi geester1, I am not getting links from those just placing his links on my sites,is it harmful and if yes at what extent?
It will not affect much. Link juice depends a bit on relevance, it will be fine even if your outbound link is going to a different niche website.
Please do not do this. your website will get banned from Google. I have experience about that. I created back link from all over all topics website using some automation website. I got the result with in 10 days. My website listed in the first page. But now google stopped to index my website. Beware