hello? should i allow comments on my blog? of course i will edit it and remove the links but i wonder if they will make the content on my page better or worst? thanks!
Depends. You should filter the comments on your blog manually. If the comment seems to be related to your post, you should let it be there but if you think it is too spammy then filter it out. Having blog comments and other link to you may also mean a good outgoing links which Google also consider as another factor on giving authority over and relevancy to other websites.
Since you can edit or remove comments or links, Yes, you can allow, but check for the spammers who just drop there for their links to be featured. If you see relevant comments, you can publish the same and use no-follow for links this way you can make your followers happy. I've seen a blog which allow comments get more traffic than which doesn't provide. Note: The most important for all blog is unique and quality content for users, visitors, which can generate good traffic.
I don't think so the things which you are talking about here are matters. Just do the quality work whether it blog comments or anything else.
You should carefully check the comments one by one and only approve those that are reliable and not spam to make your site more reliable.
If you edit the comments sensibly, it can only be good for your site. Don't remove all links - just spammy ones or ones you are unhappy promoting. If someone has written a good comment it is fair to leave their URL in and Google likes to see that you link out sometimes. Also, the commenters will probably check back and maybe promote your page when their comment is live. Make sure you respond to comments where appropriate.