Is it really necessary to disavow links from spammy social bookmarking sites?

[steveposter]

Is it really necessary to disavow links from spammy social bookmarking sites? After the last update I was told that I should disavow any spammy links that is coming to my site. What do you guys say?

According to google, spammy links will not affect your website in negative nor positive but it will just be ignored by the search engine. So creating new quality links will do better for your site.