Hei Dan,
Thanks for taking the initiative.
I just removed few categories i felt were useless and also deleted the tag widget from the blog !! since then I am having increased number of 404 errors !! it was showing on moz dashboard that I had too many links ..hence i thought its a good idea to get rid of the tag widget and the categories with very less posts !! I normally have posts under several categories . Hence I removed the ones with very less posts !! That was it, I asked the bull,myself to hit me hard !!
I dont know how to work things out now !! moreover,wordpress.com does not allow any error fix unless their package of $ 500 a month is bought !!
I have left the errors untouched waiting for answers !!
Regards,
Vikash