Can you add hashtags to Pinterest comments?

Yes, you can. Hashtags in Pinterest comments are just as valid as hashtags in descriptions. Some people prefer to put their hashtags in their pin's comments because they think it looks less spammy. However, putting hashtags in your comments won't help your pins get any higher in the search results, which are ordered by date.

Should you add hashtags to old Pinterest pins?

Pinterest's hashtag system shows pins chronologically by date, with the newest pins first. So, there's no point in adding hashtags to an old pin, as they're likely too far back in the timeline to be found via hashtags, anyway. If your old pins only reached a small audience, you could repost them with hashtags.

Are board hashtags important on Pinterest?

Pinterest has a lot of history with hashtags. Currently, in 2021, hashtags aren't essential. Pinterest said that hashtag use was 'optional', and some users noticed that non-hashtagged posts were still showing up on hashtag feeds. However, using board hashtags will only help, not hinder your Pinterest marketing efforts, so they're still important.