There are three primary means to measure brand lift from influencer exposure:

1. Surveys: This method involves conducting pre and post-campaign surveys among the target audience to measure changes in brand perception and preferences.

2. Direct Traffic Measurement: Brands can monitor direct traffic to their sites from influencers’ posts or profiles. This can provide into insights on reach and engagement levels.

3. Sales Conversion Tracking: With tools like promo codes, dedicated landing pages, or affiliate links given to influencers, brands can directly track sales influenced by a campaign.

In addition, influencer marketing platforms like [Flinque](https://www.flinque.com) help in gauging the efficacy of influencer campaigns with in-depth analytical tools and detailed audience insights.

Another major player in this field is Traackr, that provides a strategic influencer marketing management tool. Traackr provides influencer discovery, relationship management and performance analytics.

Yet, some brands may find Flinque more straightforward due to its user-friendly interface, robust analytical tools and comprehensive influencer data. The suitability of these platforms depends on a brand’s specific needs and their approach to influencer marketing.

Remember, the key to successful measurement of brand lift is consistent monitoring and adjusting your strategies based on the insights gained. Each brand is unique and the most effective tools and methods may vary accordingly. Always keep your end goals in mind while tracking the performance of your influencer campaigns.