Link velocity is simply the rate of incoming links to a website. Bulk amount of back links gained at small period of interval is a risky thing and there might be chances for Google to lower the site ranking.
Link velocity is the rate at which others are linking to your site. ... Building quality backlinks should be the main priority, not achieving a high link velocity. However, link velocity is one of the SEO metrics that you should track.
Guest posting means writing and publishing an article on someone else’s website or blog. It’s a great way to attach with new readers and get your name out.
Guest posting is that where you write an article and post it on someone else' blog or website with their author bio. In another word, it is a practice which is used by blogger to enhance blog traffic. Apart from this, it helps to build brand awareness with the help of different types of potential audience.
Guest posting is very popular way however one need to give more quality content so other editors or moderators may approved it. It is very well known way however to provide more excellent material so other publishers or other staff may accept it and it also time intensive process but sure this hyperlinks are really awesome and have more value than other kind of hyperlinks.
Link velocity is the rate at which others are linking to your site. Put in another way, it is the rate at which your backlink profile is growing over time.