The social login plugin allows visitors, without the hassle of having to register with your site, to comment, login with their logins from a social network or email provider such as Twitter, Facebook, Linked In, Google, Yahoo.
Every WordPress site should consider implementing such a plugin to engage and retain visitors.
There are two competing plugins for Social Login, WordPress Social Login vs Social Login by OneAll.
Which one to choose? It all depends on your need and tolerance.
Social Login by OneAll
Social Login by OneAll is a professional/commercial plugin. It is straightforward to implement. It is free for the first 1,000 user logins, it is not customizable. It is recommended if you expect to have over 1000 social logins for easiness and possible customization (style sheet). It costs $9 per month for up to 3,000 users, $29 for up to 10,000 users, $69 for up to 30,000 users, and more for more users.
As a free plugin for most sites, however, it is not flexible in terms of customization. And the glaring weakness of the plugin is that you are forced to display a branding link pointing to OneAll. To remove it, you’ve got to be a paid user.
Most will not object so much to the link (a necessary evil) if there will always be a rel=” no follow” tag associated with OneAll’s branding link. For better SEO/PR rank, this plugin is not recommended unless you don’t mind OneAll’s branding and contributing your PR to OneAll.
WordPress Social Login
WordPress Social Login is Open Source, Free, Unlimited, White label, Customizable, With data kept in the house.
As with most open-source, WordPress Social Login is not as much polished as the Social Login by OneAll. Customization is not much except you will have access to a style sheet to do your own modifications.
One weakness, as you will find out, is its use of Google API for Google logins. If you have several sites, you cannot customize each individual site branding and have to use a generic login branding for all sites. OneAll uses a different way of connecting to Google, so you can customize the login branding for individual sites.
All in all, WordPress Social Login is recommended for free use. Best of all, there is no branding concern and no SEO concerns.
One suggestion – don’t try to implement too many networks, just use the most popular ones, such as Facebook, Twitter, Google, Linked In, and Yahoo.
You can try both and decide for yourself.