Looking on the internet deeply has found these results:

if you are interested is the most popular phrase on the web.

if you would be interested 13,470,000 results on the web	if you are interested 1187,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
I Was Wondering If You Would Be Interested In Having A Drink With Me. Addison, I was wondering if you would be interested in having a drink with me tonight. Wondering if you would be interested in possibly being interviewed for...	For your comfort, & kdesu; implements a keep password feature. If you are interested in security, you should read this paragraph. Now, if you are interested, I will demonstrate some underground techniques. If you are interested, we talk now. Maybe we could write it together, if you are interested. If you are interested, come for an audition. I give her up gladly, if you are interested. The full videos are online if you are interested. If you are interested in your gravedigger's life, get out of my sight.

if you would be interested

13,470,000 results on the web

if you are interested

1187,000,000 results on the web

More popular!

I Was Wondering If You Would Be Interested In Having A Drink With Me.
Addison, I was wondering if you would be interested in having a drink with me tonight.
Wondering if you would be interested in possibly being interviewed for...

For your comfort, & kdesu; implements a keep password feature. If you are interested in security, you should read this paragraph.
Now, if you are interested, I will demonstrate some underground techniques.
If you are interested, we talk now.
Maybe we could write it together, if you are interested.
If you are interested, come for an audition.
I give her up gladly, if you are interested.
The full videos are online if you are interested.
If you are interested in your gravedigger's life, get out of my sight.